1
|
Dvořáčková O, Chval Z. Tuning the Reactivity and Bonding Properties of Metal Square-Planar Complexes by the Substitution(s) on the Trans-Coordinated Pyridine Ring. ACS OMEGA 2020; 5:11768-11783. [PMID: 32478268 PMCID: PMC7254792 DOI: 10.1021/acsomega.0c01161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 04/24/2020] [Indexed: 05/06/2023]
Abstract
The kinetics of the hydration reaction on trans-[Pt(NH3)2(pyrX)Cl]+ (pyr = pyridine) complexes (X = OH-, Cl-, F-, Br-, NO2 -, NH2, SH-, CH3, C≡CH, and DMA) was studied by density functional theory calculations in the gas phase and in water solution described by the implicit polarizable continuum model method. All possible positions ortho, meta, and para of the substituent X in the pyridine ring were considered. The substitution of the pyr ligand by electron-donating X's led to the strengthening of the Pt-N1(pyrX) (Pt-NpyrX) bond and the weakening of the trans Pt-Cl or Pt-Ow bonds. The electron-withdrawing X's have exactly the opposite effect. The strengths of these bonds can be predicted from the basicity of sigma electrons on the NpyrX atom determined on the isolated pyrX ligand. As the pyrX ring was oriented perpendicularly with respect to the plane of the complex, the nature of the X···Cl electrostatic interaction was the decisive factor for the transition-state (TS) stabilization which resulted in the highest selectivity of ortho-substituted systems with respect to the reaction rate. Because of a smaller size of X's, the steric effects influenced less importantly the values of activation Gibbs energies ΔG ⧧ but caused geometry changes such as the elongation of the Pt-NpyrX bonds. Substitution in the meta position led to the highest ΔG ⧧ values for most of the X's. The changes of ΔG ⧧ because of electronic effects were the same in the gas phase and the water solvent. However, as the water solvent dampened electrostatic interactions, 2200 and 150 times differences in the reaction rate were observed between the most and the least reactive mono-substituted complexes in the gas phase and the water solvent, respectively. An additional NO2 substitution of the pyrNO2 ligand further decelerated the rate of the hydration reaction, but on the other hand, the poly-NH2 complexes were no more reactive than the fastest o-NH2 system. In the gas phase, the poly-X complexes showed the additivity of the substituent effects with respect to the Pt-ligand bond strengths and the ligand charges.
Collapse
Affiliation(s)
- Olga Dvořáčková
- Faculty
of Health and Social Sciences, University
of South Bohemia, J.
Boreckého 27, 370 11 České Budějovice, Czech
Republic
- Faculty
of Science, University of South Bohemia, Branišovská 1760, 370 05 České Budějovice, Czech Republic
| | - Zdeněk Chval
- Faculty
of Health and Social Sciences, University
of South Bohemia, J.
Boreckého 27, 370 11 České Budějovice, Czech
Republic
- . Phone: +420-389-037-612
| |
Collapse
|
2
|
Mohammadi M, Pourseyed Aghaei F. Magnetite Fe 3O 4 surface as an effective drug delivery system for cancer treatment drugs: density functional theory study. J Biomol Struct Dyn 2020; 39:2798-2805. [PMID: 32301389 DOI: 10.1080/07391102.2020.1754915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In this paper, the magnetite Fe3O4 surface was studied as a drug delivery system for the two commercially famous cancer treatment drugs, including Cisplatin and Mercaptopurine, using the density functional theory (DFT) computations. Adsorption properties, magnetic and electronic properties were calculated. Results indicate that the adsorptions are thermodynamically favorable and binding energies were decreased by increasing the concentration of the ligands adsorption on the Fe3O4 surface. Our spin-polarized calculations determine that the magnetization of all systems is greater than the pristine magnetite Fe3O4 surface witch is vital for drug delivery and magnetic hyperthermia. This study provides a deep understanding of the interaction mechanism at the atomistic scale and proposed that magnetite Fe3O4 could be employed as an efficient drug carrier.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Mahnaz Mohammadi
- Department of Physics, Faculty of Science, Qom University of Technology, Qom, Iran
| | | |
Collapse
|
3
|
Bakalova AG, Buyukliev RT, Nikolova RP, Shivachev BL, Mihaylova RA, Konstantinov SM. Synthesis, Spectroscopic Properties, Crystal Structure And Biological Evaluation of New Platinum Complexes with 5-methyl-5-(2-thiomethyl)ethyl Hydantoin. Anticancer Agents Med Chem 2020; 19:1243-1252. [PMID: 30767754 DOI: 10.2174/1871520619666190214103345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 01/25/2023]
Abstract
BACKGROUND The accidental discovery of Cisplatin's growth-inhibiting properties a few decades ago led to the resurgence of interest in metal-based chemotherapeutics. A number of well-discussed factors such as severe systemic toxicity and unfavourable physicochemical properties further limit the clinical application of the platinating agents. Great efforts have been undertaken in the development of alternative platinum derivatives with an extended antitumor spectrum and amended toxicity profile as compared to the reference drug cisplatin. The rational design of conventional platinum analogues and the re-evaluation of the empirically derived "structure- activity" relationships allowed for the synthesis of platinum complexes with great diversity in structural characteristics, biochemical stability and antitumor properties. METHODS The new compounds have been studied by elemental analyses, IR, NMR and mass spectral analyses. The structures of the organic compound and one of the new mixed/ammine Pt(II) complexes were studied by X-ray diffraction analysis. The cytotoxic effects of the compounds were studied vs. the referent antineoplastic agent cisplatin against four human tumour cell lines using the standard MTT-dye reduction assay for cell viability. The most promising complex 3 was investigated for acute toxicity in male and female H-albino-mice models. RESULTS A new organic compound (5-methyl-5-(2-thiomethyl)ethyl hydantoin) L bearing both S- and Ncoordinating sites and three novel platinum complexes, 1, 2 and 3 were synthesized and studied. Spectral and structural characterization concluded monodentate S-driven coordination of the ligand L to the metal center in complexes 1 and 2, whereas the same was acted as a bidentate N,S-chelator in complex 3. Ligand L crystallizes in the tetragonal space group I41/a (No 88) with one molecule per asymmetric unit. While complex 3 crystallizes in the monoclinic space group P21/c (No 14) with one molecule per asymmetric unit. In the same complex 3, the platinum ion coordinates an L ligand, a chloride ion and an ammonia molecule. In the in vitro experiments, the tested L and complexes 1 and 2 exhibited negligible cytotoxic activity in all tumor models. Accordingly, complex 3 is twice as potent as cisplatin in the HT-29 cells and is at least as active as cisplatin on the MDA-MB-231 breast cancer cell line. In the in vivo toxicity estimation of complex 3 no signs of common toxicity were observed. CONCLUSION The Pt(II)-bidentate complex 3 exhibited significant cytotoxic potential equaling or surpassing that of the reference drug cisplatin in all the tested tumor models. Negligible anticancer activity on the screened tumor types has been shown by the ligand L and its Pt(II) and Pt(IV) complexes 1 and 2, respectively. Our study on the acute toxicity of the most active complex 3 proved it to be non-toxic in mice models.
Collapse
Affiliation(s)
- Adriana G Bakalova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, Dunav -2 Street, 1000 Sofia, Bulgaria
| | - Rossen T Buyukliev
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, Dunav -2 Street, 1000 Sofia, Bulgaria
| | - Rositsa P Nikolova
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Science, Acad. G. Bonchev Street, 107 bl, 1113 Sofia, Bulgaria
| | - Boris L Shivachev
- Institute of Mineralogy and Crystallography, Bulgarian Academy of Science, Acad. G. Bonchev Street, 107 bl, 1113 Sofia, Bulgaria
| | - Rositsa A Mihaylova
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Dunav-2 Street, 1000 Sofia, Bulgaria
| | - Spiro M Konstantinov
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Dunav-2 Street, 1000 Sofia, Bulgaria
| |
Collapse
|
4
|
Tabrizi L, Zouchoune B, Zaiter A. Theoretical and experimental study of gold(III), palladium(II), and platinum (II) complexes with 3-((4-nitrophenyl)thio)phenylcyanamide and 2,2′-bipyridine ligands: Cytotoxic activity and interaction with 9-methylguanine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
5
|
Bélanger-Desmarais N, Schütz M, Reber C. Remarkably Intricate Raman Spectra of Platinum(II)-Ligand Skeletal Modes in Diamminedihalido Complexes. J Phys Chem A 2019; 123:5574-5579. [PMID: 31145614 DOI: 10.1021/acs.jpca.9b03893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
More than 100 calculations of vibrational frequencies for cis-[Pt(NH3)2X2] (X = Cl-, Br-) and trans-[Pt(NH3)2Cl2] have been published over the past 25 years. The high-quality Raman spectra presented here have sufficient resolution in the crucial region of metal-ligand modes to permit an assessment of frequency calculations. The peaks for symmetric and antisymmetric Pt-Cl stretching modes νs and νa are resolved in the 312-333 cm-1 region. Frequency variations due to 35Cl and 37Cl isotopes are shown to be comparable in size to the differences between νs and νa. Peaks corresponding to the two Pt-Br stretching frequencies are observed at 213 and 218 cm-1 and Pt-N stretching frequencies for all compounds between 485 and 540 cm-1. The crystal structures of trans-[Pt(NH3)2Cl2] and cis-[Pt(NH3)2Br2] at 300 and 120 K are reported and complement the variable-temperature vibrational frequencies.
Collapse
Affiliation(s)
| | - Max Schütz
- Département de chimie , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| | - Christian Reber
- Département de chimie , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| |
Collapse
|
6
|
Tabrizi L, Zouchoune B, Zaiter A. Experimental and theoretical investigation of cyclometallated platinum(ii) complex containing adamantanemethylcyanamide and 1,4-naphthoquinone derivative as ligands: synthesis, characterization, interacting with guanine and cytotoxic activity. RSC Adv 2018; 9:287-300. [PMID: 35521610 PMCID: PMC9059274 DOI: 10.1039/c8ra08739c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 12/11/2018] [Indexed: 01/05/2023] Open
Abstract
A new cyclometallated platinum(ii) complex with 1-adamantanemethylcyanamide (1-ADpcydH) and 2-[amino(2-phenylpyridine)]-1,4-naphthoquinone (1,4-NQ) ligands with the formula cis-Pt(1,4-NQ)(1-ADpcyd)(H2O) was synthesized and fully characterized. Cellular uptake, DNA platination, and cytotoxicity against human MCF-7 breast, HepG-2 liver hepatocellular carcinoma, and HT-29 colon cancer cell lines were evaluated. The interaction of guanine (G) with cis-Pt(1,4-NQ)(1-ADpcyd)(H2O) was studied by 195Pt NMR and mass spectroscopy. Furthermore, DFT calculations were performed on the complexes cis-Pt(1,4-NQ)(1-ADpcyd)(H2O) 1 and cis-Pt(1,4-NQ)(1-ADpcyd)(G) 2 using the BP86-D and B3LYP functionals, in order to gain deeper insights into the molecular and electronic structures. Decomposition energy analysis gave a clear understanding of the bonding within both complexes, showing that the interactions were governed by two-third ionic and one-third covalent characters, which were stronger between the guanine and the Pt(ii) center than those between water and the Pt(ii). A new cyclometallated platinum(ii) complex was synthesized and its characterization, interaction with guanine, and cytotoxic activity were investigated by experiment and theoretical calculations.![]()
Collapse
Affiliation(s)
- Leila Tabrizi
- School of Chemistry, National University of Ireland Galway University Road Galway Ireland H91 TK33
| | - Bachir Zouchoune
- Laboratoire de Chimie appliquée et Technologie des Matériaux, Université Larbi Ben M'Hidi - Oum El Bouaghi 04000 Oum El Bouaghi Algeria .,Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, Université Constantine (Mentouri) 25000 Constantine Algeria
| | - Abdallah Zaiter
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, Université Constantine (Mentouri) 25000 Constantine Algeria
| |
Collapse
|
7
|
|
8
|
Hydrolysis and binding mechanism of AMD473 (cis-[PtCl2(NH3)(2-picoline)]) with guanine: A quantum mechanical study. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.05.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Banerjee S, Sengupta PS, Mukherjee AK. A detailed theoretical DFT study of the hydrolysis mechanism of orally active anticancer drug ZD0473. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.01.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
10
|
Dans PD, Crespo A, Estrin DA, Coitiño EL. Structural and Energetic Study of Cisplatin and Derivatives: Comparison of the Performance of Density Funtional Theory Implementations. J Chem Theory Comput 2008; 4:740-50. [DOI: 10.1021/ct7002385] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pablo D. Dans
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República (UdelaR), Centro Universitario Malvín Norte, Iguá 4225, Montevideo 11400, Uruguay, and Departamento de Química Inorgánica, Analítica y Química Física/IUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires (C1428EHA), Argentina
| | - Alejandro Crespo
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República (UdelaR), Centro Universitario Malvín Norte, Iguá 4225, Montevideo 11400, Uruguay, and Departamento de Química Inorgánica, Analítica y Química Física/IUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires (C1428EHA), Argentina
| | - Darío A. Estrin
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República (UdelaR), Centro Universitario Malvín Norte, Iguá 4225, Montevideo 11400, Uruguay, and Departamento de Química Inorgánica, Analítica y Química Física/IUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires (C1428EHA), Argentina
| | - E. Laura Coitiño
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República (UdelaR), Centro Universitario Malvín Norte, Iguá 4225, Montevideo 11400, Uruguay, and Departamento de Química Inorgánica, Analítica y Química Física/IUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires (C1428EHA), Argentina
| |
Collapse
|
11
|
Ozimiński WP, Garnuszek P, Bednarek E, Dobrowolski JC. The platinum complexes with histamine: Pt(II)(Hist)Cl2, Pt(II)(Iodo-Hist)Cl2 and Pt(IV)(Hist)2Cl2. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.10.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Ourliac-Garnier I, Elizondo-Riojas MA, Redon S, Farrell NP, Bombard S. Cross-links of quadruplex structures from human telomeric DNA by dinuclear platinum complexes show the flexibility of both structures. Biochemistry 2005; 44:10620-34. [PMID: 16060671 DOI: 10.1021/bi050144w] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The folding of AG(3)(T(2)AG(3))(3) was investigated in the presence of Na(+) or K(+) ions, by using the dinuclear platinum complexes [{trans-PtCl(NH(3))(2)}(2)H(2)N(CH(2))(n)NH(2)]Cl(2) (n = 2 or 6). AG(3)(T(2)AG(3))(3) has been previously found to adopt two different quadruplex structures: the antiparallel one in a solution containing Na(+) and the parallel one in a K(+)-containing crystal. The two structures are strikingly distinct and are not expected to form the same platinum cross-links. Therefore, characterization of the cross-links formed with platinum complexes in solution allowed the predominant conformation(s) to be identified. The bases coordinating the platinum atoms were identified by chemical and 3'-exonuclease digestions. The observed cross-links showed that the parallel structure exists in solution whatever the cation and confirmed the existence of the antiparallel structure in the presence of both cations as previously reported from cross-linking experiments of AG(3)(T(2)AG(3))(3) by mononuclear platinum complexes. Furthermore, the major platinum cross-links were unexpectedly formed between two guanines belonging to the same G-quartet. Their formation was rationalized using molecular dynamics simulations in implicit solvent of the two quadruplex structures. It was shown that they were flexible, allowing some guanines to leave reversibly the top G-quartet and thus rendering their N(7) atom accessible to platinum complexes. Our results also suggest that the human telomere sequence could be a target for such platinum complexes.
Collapse
Affiliation(s)
- Isabelle Ourliac-Garnier
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR8601, Université René Descartes, 45 rue des Saints-Pères, 75270 Paris Cedex 06, France
| | | | | | | | | |
Collapse
|
13
|
Michalska D, Wysokiński R. The prediction of Raman spectra of platinum(II) anticancer drugs by density functional theory. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2004.12.096] [Citation(s) in RCA: 393] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|